Jacqueline B. Persons, PhD, is director of the Cognitive Behavior Therapy and Science Center and a clinical professor in the department of psychology at the University of California, Berkeley. Persons is the author of three books, including The Case Formulation Approach to Cognitive-Behavior Therapy and Cognitive Therapy in Practice: A Case Formulation Approach. She is past president of the Association for Behavioral and Cognitive Therapies and the Society for a Science of Clinical Psychology.